Despite the offended Germans here, it is important to realize that Twain learned German well enough to perform (in German) in Germany, and was actually better known as basically the 19th-century version of a stand-up comic in America and Europe in his lifetime rather than the novelist he is remembered for now.
I didn't see any offended Germans! People seem to be taking the article in its intended (fun) spirit.
Edit: Seems true of the previous threads as well: https://news.ycombinator.com/item?id=44002116
To add to this, I think Germans are usually the most chill about making fun of their own language. Well, I guess except English because it became so international.